Hertzsprung–Russell diagram of the stars occulted by (28978) Ixion

Supplementary figure associated with the paper "Constraining the size, shape, and albedo of the large Trans-Neptunian Object (28978) Ixion with multi-chord stellar occultations" (Kilic et al., A&A, submitted 2025). This figure shows the Hertzsprung–Russell diagram of the stars occulted by Ixion, based on Gaia DR3 photometry and parallaxes. Star catalogue data were obtained from the HYG database (https://www.astronexus.com/projects/hyg).